The security services have thwarted 34 terror plots in Britain since the July
7 bombings in 2005, with the bulk hatched by home-grown extremists, the head
of MI5 revealed yesterday. Each year, one or two of the failed plots were
aimed at causing mass casualties, Andrew Parker told a parliamentary
committee.

The terrorist threat against Britons overseas was also rising: more civilians
were killed in attacks abroad this year than in the past seven years
combined, the head of MI6 said.

Sir John Sawers, of MI6, and Mr Parker were speaking alongside Sir Iain
Lobban, their counterpart at GCHQ, the